code: def test_is_subset():
      # covers line 101-102
      # initialize powerset(1), which is a subset of powerset(1,2)
      subset = PowerSet(FiniteSet(1))
      pset = PowerSet(FiniteSet(1, 2))
      bad_set = PowerSet(FiniteSet(2, 3))
      # assert "subset" is subset of pset == True
      assert subset.is_subset(pset)
      # assert "bad_set" is subset of pset == False
      assert not pset.is_subset(bad_set)
  
file_path: sympy/sympy/sets/tests/test_powerset.py
imports: from sympy.core.expr import unchanged
  from sympy.core.singleton import S
  from sympy.core.symbol import Symbol
  from sympy.sets.contains import Contains
  from sympy.sets.fancysets import Interval
  from sympy.sets.powerset import PowerSet
  from sympy.sets.sets import FiniteSet
  from sympy.testing.pytest import raises, XFAIL
label_desc: Use image node_id 10 for calling a global function with example usage: test_is_subset() without return types